Brane cosmological evolution with bulk matter

被引：30

作者：

Bogdanos, C. ^{[1
]}

Tamvakis, K. ^{[1
]}

机构：

[1] Univ Ioannina, Dept Phys, GR-45110 Ioannina, Greece

来源：

PHYSICS LETTERS B | 2007年 / 646卷 / 01期

关键词：

D O I：

10.1016/j.physletb.2007.01.009

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We consider the cosmological evolution of a brane for general bulk matter content. In our setup the bulk pressure and the energy exchange densities are comparable to the brane energy density. Adopting a phenomenological fluid ansatz and generalizations of it, we derive a set of exact solutions of the Friedmann equation that exhibit accelerated expansion. We find that the effective equation of state parameter for the dark energy can exhibit w = -1 crossing without the presence of exotic matter. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：39 / 46

页数：8

共 29 条

[1] New dimensions at a millimeter to a fermi and superstrings at a TeV [J].